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use json to cache descriptions

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We need to use `atomic_write` when saving the cache. And it seems that
CSV module doesn't support dump, so let's use JSON instead.
This commit is contained in:
Xu Cheng 2015-09-09 14:00:26 +08:00
parent c5536e1e08
commit 65996b5887
1 changed files with 3 additions and 10 deletions
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13
Library/Homebrew/descriptions.rb
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@ -1,9 +1,8 @@
require "formula"
require "formula_versions"
require "csv"
class Descriptions
CACHE_FILE = HOMEBREW_CACHE + "desc_cache"
CACHE_FILE = HOMEBREW_CACHE + "desc_cache.json"
def self.cache
@cache || self.load_cache
@ -13,9 +12,7 @@ class Descriptions
# return nil.
def self.load_cache
if CACHE_FILE.exist?
@cache = {}
CSV.foreach(CACHE_FILE) { |name, desc| @cache[name] = desc }
@cache
@cache = Utils::JSON.load(CACHE_FILE.read)
end
end
@ -23,11 +20,7 @@ class Descriptions
# directory.
def self.save_cache
HOMEBREW_CACHE.mkpath
CSV.open(CACHE_FILE, 'w') do |csv|
@cache.each do |name, desc|
csv << [name, desc]
end
end
CACHE_FILE.atomic_write Utils::JSON.dump(@cache)
end
# Create a hash mapping all formulae to their descriptions;